Extracting prog: 48m51.668261158s Minimizing prog: 15m21.38422359s Simplifying prog options: 15m32.523659635s Extracting C: 6m11.886447816s Simplifying C: 0s extracting reproducer from 51 programs testing a last program of every proc single: executing 11 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-socket$nl_generic-syz_mount_image$ext4-bpf$BPF_PROG_DETACH-ioctl$sock_SIOCGIFINDEX-socket$netlink-ioctl$ifreq_SIOCGIFINDEX_batadv_mesh-prctl$PR_SCHED_CORE-prlimit64-sched_setscheduler-openat$sequencer-syz_open_dev$sndmidi-writev-syz_memcpy_off$IO_URING_METADATA_GENERIC-sendmsg$nl_route-ioctl$FS_IOC_READ_VERITY_METADATA-socket$nl_netfilter-sendmsg$MPTCP_PM_CMD_SET_LIMITS-socket$kcm-sendmsg$nl_route_sched-sendmsg$nl_route-sendmsg$kcm detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000500)={0x11, 0x5, &(0x7f0000000040)=ANY=[@ANYBLOB="180000000000000600"], &(0x7f0000000340)='GPL\x00', 0x9, 0x0, 0x0, 0x41000, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x2c08}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={0x0, r0}, 0x18) r1 = socket$nl_generic(0x10, 0x3, 0x10) syz_mount_image$ext4(&(0x7f00000000c0)='ext4\x00', &(0x7f0000000000)='./file0\x00', 0x986810, &(0x7f00000003c0)={[{@journal_checksum}]}, 0x2e, 0x760, &(0x7f0000001100)="$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") bpf$BPF_PROG_DETACH(0x9, &(0x7f00000000c0)=ANY=[], 0x20) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000300)={'bridge0\x00'}) r2 = socket$netlink(0x10, 0x3, 0x0) ioctl$ifreq_SIOCGIFINDEX_batadv_mesh(0xffffffffffffffff, 0x8933, &(0x7f0000000140)) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7) openat$sequencer(0xffffffffffffff9c, &(0x7f00000001c0), 0x80280, 0x0) r3 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x141102) writev(r3, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, 0x0, 0x0, 0x4) sendmsg$nl_route(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000040)=@newlink={0x20, 0x10, 0x503, 0x0, 0x25dfdbff, {0x0, 0x0, 0x0, 0x0, 0x14615, 0xef}}, 0x20}, 0x1, 0x0, 0x0, 0x200488c0}, 0x0) ioctl$FS_IOC_READ_VERITY_METADATA(0xffffffffffffffff, 0xc0286687, &(0x7f0000000d00)={0x1, 0xfffffffffffffff7, 0x0, 0x0}) socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r1, &(0x7f0000005240)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x84) r4 = socket$kcm(0x10, 0x2, 0x10) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000300)={&(0x7f0000000240)=@newtaction={0x48, 0x30, 0x53b, 0x0, 0x0, {0x9}, [{0x34, 0x1, [@m_sample={0x30, 0x1, 0x0, 0x0, {{0xb}, {0x4}, {0x4}, {0xc}, {0xc, 0x4, {0x3}}}}]}]}, 0x48}}, 0x0) sendmsg$nl_route(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000040)=ANY=[@ANYBLOB="680000001000030500"/20, @ANYRES32=r4, @ANYBLOB="0000000000000000400012800c0001006d6163766c616e0030000280080006"], 0x68}}, 0x0) sendmsg$kcm(r4, &(0x7f0000000000)={0x0, 0xd18c9b25, &(0x7f0000000080)=[{&(0x7f0000000040)="e03f03003f000b05d25a806c8c6394f90324fc60100002000a000300053582c137153e3704020180fc0b09000c00", 0x33fe0}], 0x1}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-getpid-sched_setaffinity-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-sched_setaffinity-recvmmsg-futex-socket$inet_smc-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK-connect$inet-openat$fb0-syz_io_uring_setup-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-syz_memcpy_off$IO_URING_METADATA_GENERIC-socketpair$nbd-syz_io_uring_submit-io_uring_enter detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r0 = getpid() sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2) sched_setscheduler(r0, 0x2, &(0x7f0000000200)=0x4) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r1, &(0x7f000057eff8)=@file={0x0, './file0\x00'}, 0x6e) sendmmsg$unix(r2, &(0x7f0000000000), 0x400000000000041, 0x0) sched_setaffinity(r0, 0x8, &(0x7f0000000240)=0x2) recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0) futex(0x0, 0xc, 0x1, 0x0, &(0x7f0000048000)=0x2, 0x0) r3 = socket$inet_smc(0x2b, 0x1, 0x0) r4 = socket$netlink(0x10, 0x3, 0x14) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r4, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000001200)={&(0x7f00000004c0)=ANY=[@ANYBLOB="38000000031401002d9d7000000000000900020073797a30000000000800410073697700140033006c6f00"/56], 0x38}, 0x1, 0x0, 0x0, 0x854}, 0x0) connect$inet(r3, &(0x7f0000001980)={0x2, 0x1, @loopback}, 0x10) openat$fb0(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) r5 = syz_io_uring_setup(0x10c, &(0x7f00000000c0)={0x0, 0x8006d89, 0x400, 0x2, 0x66}, &(0x7f0000000400)=0x0, &(0x7f0000000040)=0x0) r8 = bpf$PROG_LOAD(0x5, &(0x7f00000008c0)={0x11, 0xb, &(0x7f0000000980)=ANY=[], &(0x7f0000000500)='GPL\x00', 0x0, 0x0, 0x0, 0x41100, 0x0, '\x00', 0x0, @fallback=0x21, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000540)={&(0x7f0000000180)='io_uring_poll_arm\x00', r8}, 0x18) syz_memcpy_off$IO_URING_METADATA_GENERIC(r6, 0x4, &(0x7f0000000080)=0xfffffffc, 0x0, 0x4) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) syz_io_uring_submit(r6, r7, &(0x7f00000004c0)=@IORING_OP_RECV=@pass_buffer={0x1b, 0x0, 0x0, r9, 0x0, 0x0, 0x0, 0x100}) io_uring_enter(r5, 0x8aa, 0x0, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-socket$kcm-socket$netlink-bpf$MAP_CREATE-bpf$BPF_BTF_LOAD-bpf$PROG_LOAD-bpf$BPF_BTF_GET_NEXT_ID-bpf$PROG_LOAD-pipe-ioctl$sock_ipv4_tunnel_SIOCDELTUNNEL-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-bind$netlink-socket$nl_generic-syz_genetlink_get_family_id$devlink-sendmsg$DEVLINK_CMD_RATE_NEW-setsockopt$netlink_NETLINK_BROADCAST_ERROR-sendmsg$inet detailed listing: executing program 0: bpf$MAP_CREATE(0x0, 0x0, 0x0) r0 = socket$kcm(0x10, 0x2, 0x0) r1 = socket$netlink(0x10, 0x3, 0x10) bpf$MAP_CREATE(0x0, &(0x7f0000001e80)=ANY=[], 0x48) r2 = bpf$BPF_BTF_LOAD(0x12, &(0x7f00000003c0)={&(0x7f0000000240)=ANY=[@ANYBLOB="9feb010018000000000000000c0000000c000000020000000000000000000004"], 0x0, 0x26}, 0x20) r3 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0xd, 0x3, &(0x7f0000001740)=ANY=[@ANYBLOB="180000000000000000000000000000009500000000000000bc7ef9642d29ba564165605dca29708efdf9b15a5c10a126121b2751f642635bcd9a8bf7a928a5d054b0d2c54d519ea75c52f41ed6f2886973626b684c8bd9108c0b0b2ea7e556948f0367aff4fbcede3294f6e73d06ad16dc2d26725ff833b5f83b499918e6a6ec245b781d41aee9624c847e2f2312d6b9db45bad354fc1a3f20407ffe406483a0524937ee7559e4bf70136746b37fdfbbb152758d37ed8bcac41fb7243bdcd536249c7996e898b61927eaa5a8790054ba13d3ade593220f96027090a34aaf7ea92f41aab73e7a85eef87e956bb7c5c76a347264fd99359f4e57b0dcc2bcc188ea880a4b11a8bb81eb22b0ddfc689e3218cf310dcc61cab354149d9107d8a88b0aa5b5661555f00443aee5e714009e52cee5e88f008148ddbc0fa81bf938bed4a1ac778d5337cc0311d0772eeac3eab38426e8d1472ff514aa5379ed21551790cc10148410b4fc27582fd7106a8887a9a0b613dfe10aee77542d887208f5534f5dce4d43f258fc9ef975834e1917666e2aff1cebfc3ce2c1e8ff66bba1d9050000000000000078db7024bf321636bede8651e672ed4f01ba5da2c3f9042a8552bd3f2c9ad546ad0ea20b4d35fb0a15c6239f67c7747a40fe26a88adf727fd1b801b4e56fbffcad99ce68fe2af0d94fdc78d27268de435021dca51acaa7a9e0944bdf579c170db6405944b6791a7713ee54f650fdf71b57c3629fb185efce700620ef5744623be08ec935dd563e6ba0b461bda98b364acf3dcdafa9b0e68c21ea509212c2938aa09cc31aa4ee5bfb8e507181909f5854b13997af4888cd61c8aab5fdfd701a16d546e5a533cd9b985dcc582b67979551dcc750fc51f2c9b6814edeffc76a86ea9f58b7c66fa24540daf14c2163d064f8cf0b4878f81e6b8bc4dabc10dac82b39e033963a6d02434cb783a198829d1373790a85c0e01a362d89e80165d280283af3c2060000000000000034b12a73b0c53bfae5d2f6e55728052247adfe0966c6c5eca57918c4540c979a70a281ba00e408c9fe1b20fa208976dd6a56f9bd9a74d81447c9b265d8c23f0e983e0b1d2d62d1e57c9188e4882634476e62ab1b7415a58208eaaf166d14720092f79a6197fe8b4ea7d5485cc6b3630afed8d3403cfa4d7bf48efb371706e0e65901eea3743c98261cbb7a246cf62f99bbc918741d32539ec0754e7d7f08dd45aaf49623342eabf466e54d8da4346e73da54ba2e4b5e2ae2823864d4147b490e55c9509f75c8828500ac32cab11b0262e75fa9e39e3792d01e0b210fdfb686bfffdc677432f6332c1a27502b43997060acdf7784c79fed0325e06f6b64b6434ebf4730509bcf95b9a1d0ba7c469d55351cc1dce6c90f5872e7ad5eed5f850d9d1f928b4e0263b241e8fe03e5e66252c8a3bd320e8deee5b91c653b8f22f58cff36c2ba4d6774f14229939595d2beb998c9312212de00468fc488591aca07ab75fba4a318d3ee4581711927b77a7f14dbcd639892f8cb0000000000000080411736eb1ee86eec338197a56293c9cdb72e84155681553b896d58b62a96852320e74dc4c9b41d6f90d2353dc573a94a092a84209c12da57f8c78e161b0899eb1c8b694d26c5fbf7f65fefacdbf39151f335dddc3b179a13f6de93ffb338e94738c86e35e9fcc654e4d6618dc1201cbd16e1281df911e6c699da16fbbb7a2e5c77966c98d3e7edd58cabfe6bf1bb7f6329084e3e4a2a36da07bbac3ebc00472f55b7966f250109fcce0ad5d4526d20ef74d1a634d724"], &(0x7f0000000080)='GPL\x00', 0x5, 0x1f6, &(0x7f00000002c0)=""/168, 0x0, 0x0, '\x00', 0x0, @sock_ops, r2, 0x8, 0x0, 0x0, 0x10, &(0x7f0000000200), 0x1}, 0x6d) bpf$BPF_BTF_GET_NEXT_ID(0x17, &(0x7f0000000000)={0x0, 0x0}, 0x8) bpf$PROG_LOAD(0x5, &(0x7f0000000480)={0x1c, 0x3, &(0x7f0000000200)=ANY=[@ANYBLOB="1802000002ff0100000000000000000095"], &(0x7f0000000180)='GPL\x00', 0x4, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, r4, r3}, 0x94) pipe(&(0x7f00000055c0)={0xffffffffffffffff}) ioctl$sock_ipv4_tunnel_SIOCDELTUNNEL(r5, 0x89f2, &(0x7f0000000380)={'gre0\x00', &(0x7f0000000580)={'gretap0\x00', 0x0, 0x1, 0x7800, 0x82, 0x5, {{0x25, 0x4, 0x2, 0x1, 0x94, 0x68, 0x0, 0x9, 0x29, 0x0, @private=0xa010100, @remote, {[@timestamp_addr={0x44, 0x1c, 0x73, 0x1, 0x3, [{@loopback, 0x40}, {@multicast2, 0xffffffff}, {@local, 0x7ca}]}, @timestamp_prespec={0x44, 0x3c, 0xaa, 0x3, 0xf, [{@rand_addr=0x64010101, 0x3}, {@remote, 0x8}, {@initdev={0xac, 0x1e, 0x1, 0x0}, 0x8}, {@rand_addr=0x64010100, 0x9}, {@remote, 0x9}, {@empty, 0x6}, {@rand_addr=0x64010100, 0x2}]}, @timestamp={0x44, 0x24, 0xad, 0x0, 0x2, [0x9, 0x5, 0x6, 0xf, 0x0, 0x1, 0x7, 0x4]}, @end]}}}}}) r7 = bpf$PROG_LOAD(0x5, &(0x7f0000000740)={0x11, 0xd, &(0x7f0000000280)=ANY=[], 0x0, 0xfffffffe, 0x0, 0x0, 0x0, 0x0, '\x00', r6, @fallback=0x4, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, r4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000001c0)={0x0, r7, 0x0, 0x2}, 0x18) bind$netlink(r1, &(0x7f0000514ff4)={0x10, 0x0, 0x0, 0x2ffffffff}, 0xc) r8 = socket$nl_generic(0x10, 0x3, 0x10) r9 = syz_genetlink_get_family_id$devlink(&(0x7f0000000040), r8) sendmsg$DEVLINK_CMD_RATE_NEW(r8, &(0x7f0000000540)={0x0, 0x0, &(0x7f0000000700)={&(0x7f0000000300)={0x34, r9, 0x1, 0x0, 0x25dfdbfb, {0x25}, [@handle=@nsim={{0xe}, {0xf, 0x2, {'netdevsim', 0x0}}}]}, 0x34}, 0x1, 0x0, 0x0, 0x41}, 0x0) setsockopt$netlink_NETLINK_BROADCAST_ERROR(r1, 0x10e, 0x4, &(0x7f0000000640)=0x1800, 0x4) sendmsg$inet(r0, &(0x7f0000000140)={0x0, 0x2, &(0x7f0000000100)=[{&(0x7f0000000180)="5c00000013006bcd9e3fe3dc4e48aa31086b8703410000004000000000000000040014000d000a00100000009ee517d34460bc08eab556a705251e6182949a3651f60a84c9f5d1938837e786a6d0bdd7fcf50e4509c5bb5a00f69853", 0x5c}], 0x1, 0x0, 0x0, 0x1f000801}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$kcm-sendmsg$kcm-recvmsg$kcm detailed listing: executing program 0: r0 = socket$kcm(0x10, 0x3, 0x10) sendmsg$kcm(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000040)=[{&(0x7f00000000c0)="1400000016000b63d25a8064000000000124fc60", 0x14}], 0x1}, 0x0) recvmsg$kcm(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000300)=""/4069, 0xfe5}, {&(0x7f00000001c0)=""/168, 0xa8}, {0x0}], 0x3}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$tun-openat$tun-close-socketpair$unix-ioctl$SIOCSIFHWADDR-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETOFFLOAD-write$cgroup_devices detailed listing: executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000100), 0xc1842, 0x0) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) close(r1) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000140)) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000002280)={'syzkaller0\x00', @link_local}) r2 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r2, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) ioctl$TUNSETOFFLOAD(r2, 0x400454c9, 0xba98575a95aeb70d) write$cgroup_devices(r0, &(0x7f0000000840)=ANY=[@ANYBLOB="1e0308004d6b71ef288563"], 0xffdd) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$xdp-socket$inet6_sctp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$inet6-openat$cgroup_ro-sendmsg$NFQNL_MSG_VERDICT-setsockopt$MRT_FLUSH-socket$nl_generic-socket$nl_netfilter-socket$nl_netfilter-sendmsg$IPSET_CMD_ADD detailed listing: executing program 0: socket$xdp(0x2c, 0x3, 0x0) socket$inet6_sctp(0xa, 0x5, 0x84) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0) sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x40) socket$inet6(0xa, 0x3, 0x8000000003c) r0 = openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000240)='cpuacct.usage_user\x00', 0x0, 0x0) sendmsg$NFQNL_MSG_VERDICT(r0, 0x0, 0x40000) setsockopt$MRT_FLUSH(0xffffffffffffffff, 0x0, 0xd4, &(0x7f0000000040)=0xc, 0x4) socket$nl_generic(0x10, 0x3, 0x10) socket$nl_netfilter(0x10, 0x3, 0xc) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_ADD(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000280)={0x44, 0x9, 0x6, 0x201, 0x0, 0x0, {}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_PROTOCOL={0x5}, @IPSET_ATTR_DATA={0x1c, 0x7, 0x0, 0x1, [@IPSET_ATTR_IP={0xc, 0x1, 0x0, 0x1, @IPSET_ATTR_IPADDR_IPV4={0x8, 0x1, 0x1, 0x0, @broadcast}}, @IPSET_ATTR_IP_TO={0xc, 0x2, 0x0, 0x1, @IPSET_ATTR_IPADDR_IPV4={0x8, 0x1, 0x1, 0x0, @loopback}}]}]}, 0x44}, 0x1, 0x0, 0x0, 0x10040047}, 0x240008c4) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$xdp-socket$inet6_sctp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$inet6-openat$cgroup_ro-sendmsg$NFQNL_MSG_VERDICT-setsockopt$MRT_FLUSH-socket$nl_generic-socket$nl_netfilter-socket$nl_netfilter-sendmsg$IPSET_CMD_ADD detailed listing: executing program 0: socket$xdp(0x2c, 0x3, 0x0) socket$inet6_sctp(0xa, 0x5, 0x84) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0) sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x40) socket$inet6(0xa, 0x3, 0x8000000003c) r0 = openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000240)='cpuacct.usage_user\x00', 0x0, 0x0) sendmsg$NFQNL_MSG_VERDICT(r0, 0x0, 0x40000) setsockopt$MRT_FLUSH(0xffffffffffffffff, 0x0, 0xd4, &(0x7f0000000040)=0xc, 0x4) socket$nl_generic(0x10, 0x3, 0x10) socket$nl_netfilter(0x10, 0x3, 0xc) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_ADD(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000280)={0x44, 0x9, 0x6, 0x201, 0x0, 0x0, {}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_PROTOCOL={0x5}, @IPSET_ATTR_DATA={0x1c, 0x7, 0x0, 0x1, [@IPSET_ATTR_IP={0xc, 0x1, 0x0, 0x1, @IPSET_ATTR_IPADDR_IPV4={0x8, 0x1, 0x1, 0x0, @broadcast}}, @IPSET_ATTR_IP_TO={0xc, 0x2, 0x0, 0x1, @IPSET_ATTR_IPADDR_IPV4={0x8, 0x1, 0x1, 0x0, @loopback}}]}]}, 0x44}, 0x1, 0x0, 0x0, 0x10040047}, 0x240008c4) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot-ioctl$SNAPSHOT_SET_SWAP_AREA detailed listing: executing program 0: r0 = openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) ioctl$SNAPSHOT_SET_SWAP_AREA(r0, 0x400c330d, &(0x7f0000000000)={0x1d82, 0x7}) program crashed: KASAN: slab-use-after-free Write in flush_tlb_func single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=7m32.61264384s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) program crashed: KASAN: slab-use-after-free Write in flush_tlb_func testing program (duration=7m32.61264384s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, 0x0, 0x803f, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=7m32.61264384s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=7m32.61264384s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) program crashed: KASAN: slab-use-after-free Write in flush_tlb_func extracting C reproducer testing compiled C program (duration=7m32.61264384s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=7m32.61264384s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) program did not crash testing program (duration=7m32.61264384s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) program crashed: KASAN: slab-use-after-free Write in flush_tlb_func validation run: crashed=true testing program (duration=7m32.61264384s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) program crashed: KASAN: slab-use-after-free Write in flush_tlb_func validation run: crashed=true testing program (duration=7m32.61264384s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$snapshot detailed listing: executing program 0: openat$snapshot(0xffffffffffffff9c, &(0x7f0000000600), 0x803f, 0x0) program crashed: KASAN: slab-use-after-free Write in flush_tlb_func validation run: crashed=true reproducing took 1h40m58.113428747s repro crashed as (corrupted=false): ================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_write include/linux/instrumented.h:82 [inline] BUG: KASAN: slab-use-after-free in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] BUG: KASAN: slab-use-after-free in cpumask_clear_cpu include/linux/cpumask.h:628 [inline] BUG: KASAN: slab-use-after-free in flush_tlb_func+0x23d/0x6c0 arch/x86/mm/tlb.c:1132 Write of size 8 at addr ffff888057fa0a00 by task syz.3.4640/11173 CPU: 0 UID: 0 PID: 11173 Comm: syz.3.4640 Not tainted 6.16.0-rc4-next-20250630-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:189 instrument_atomic_write include/linux/instrumented.h:82 [inline] clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] cpumask_clear_cpu include/linux/cpumask.h:628 [inline] flush_tlb_func+0x23d/0x6c0 arch/x86/mm/tlb.c:1132 csd_do_func kernel/smp.c:134 [inline] __flush_smp_call_function_queue+0x370/0xaa0 kernel/smp.c:540 __sysvec_call_function_single+0xa8/0x3d0 arch/x86/kernel/smp.c:271 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline] sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:console_flush_all+0x7f7/0xc40 kernel/printk/printk.c:3227 Code: 48 21 c3 0f 85 e9 01 00 00 e8 65 2d 1f 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 56 2d 1f 00 eb 06 e8 4f 2d 1f 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 3a 41 83 00 48 8b 1b 48 8b 44 24 RSP: 0018:ffffc90004e67120 EFLAGS: 00000293 RAX: 1ffffffff1d36a63 RBX: ffffffff8e9b5318 RCX: ffff8880584eda00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004e67270 R08: ffffffff8fa17437 R09: 1ffffffff1f42e86 R10: dffffc0000000000 R11: fffffbfff1f42e87 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b52c0 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 random_pm_notification+0x1ba/0x1f0 drivers/char/random.c:856 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 notifier_call_chain_robust kernel/notifier.c:120 [inline] blocking_notifier_call_chain_robust+0x85/0x100 kernel/notifier.c:345 pm_notifier_call_chain_robust+0x2c/0x60 kernel/power/main.c:102 snapshot_open+0x133/0x280 kernel/power/user.c:87 misc_open+0x2bc/0x330 drivers/char/misc.c:161 chrdev_open+0x4cc/0x5e0 fs/char_dev.c:414 do_dentry_open+0xdf3/0x1970 fs/open.c:964 vfs_open+0x3b/0x340 fs/open.c:1094 do_open fs/namei.c:3887 [inline] path_openat+0x2ee5/0x3830 fs/namei.c:4046 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1434 do_sys_open fs/open.c:1449 [inline] __do_sys_openat fs/open.c:1465 [inline] __se_sys_openat fs/open.c:1460 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1460 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa75b98e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe8f347858 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa75bbb5fa0 RCX: 00007fa75b98e929 RDX: 000000000000803f RSI: 0000200000000600 RDI: ffffffffffffff9c RBP: 00007fa75ba10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa75bbb5fa0 R14: 00007fa75bbb5fa0 R15: 0000000000000004 Allocated by task 9122: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236 dup_mm kernel/fork.c:1466 [inline] copy_mm+0xdb/0x4b0 kernel/fork.c:1528 copy_process+0x1706/0x3c00 kernel/fork.c:2168 kernel_clone+0x21e/0x870 kernel/fork.c:2598 __do_sys_clone kernel/fork.c:2741 [inline] __se_sys_clone kernel/fork.c:2725 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 11172: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4782 exit_mm+0x1da/0x2c0 kernel/exit.c:581 do_exit+0x648/0x2300 kernel/exit.c:947 do_group_exit+0x21c/0x2d0 kernel/exit.c:1100 __do_sys_exit_group kernel/exit.c:1111 [inline] __se_sys_exit_group kernel/exit.c:1109 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1109 x64_sys_call+0x21ba/0x21c0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888057fa0000 which belongs to the cache mm_struct of size 2584 The buggy address is located 2560 bytes inside of freed 2584-byte region [ffff888057fa0000, ffff888057fa0a18) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x57fa0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88805c460c81 anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801a44bb40 0000000000000000 dead000000000001 raw: 0000000000000000 00000000800b000b 00000000f5000000 ffff88805c460c81 head: 00fff00000000040 ffff88801a44bb40 0000000000000000 dead000000000001 head: 0000000000000000 00000000800b000b 00000000f5000000 ffff88805c460c81 head: 00fff00000000003 ffffea00015fe801 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5988, tgid 5988 (syz-executor), ts 448409180536, free_ts 448403732949 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1848 prep_new_page mm/page_alloc.c:1856 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3855 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5145 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2487 [inline] allocate_slab+0x8a/0x370 mm/slub.c:2655 new_slab mm/slub.c:2709 [inline] ___slab_alloc+0xbeb/0x1410 mm/slub.c:3891 __slab_alloc mm/slub.c:3981 [inline] __slab_alloc_node mm/slub.c:4056 [inline] slab_alloc_node mm/slub.c:4217 [inline] kmem_cache_alloc_noprof+0x283/0x3c0 mm/slub.c:4236 dup_mm kernel/fork.c:1466 [inline] copy_mm+0xdb/0x4b0 kernel/fork.c:1528 copy_process+0x1706/0x3c00 kernel/fork.c:2168 kernel_clone+0x21e/0x870 kernel/fork.c:2598 __do_sys_clone kernel/fork.c:2741 [inline] __se_sys_clone kernel/fork.c:2725 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5988 tgid 5988 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1392 [inline] __free_frozen_pages+0xb80/0xd80 mm/page_alloc.c:2892 discard_slab mm/slub.c:2753 [inline] __put_partials+0x156/0x1a0 mm/slub.c:3218 put_cpu_partial+0x17c/0x250 mm/slub.c:3293 __slab_free+0x2d5/0x3c0 mm/slub.c:4550 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236 getname_flags+0xb8/0x540 fs/namei.c:146 getname include/linux/fs.h:2909 [inline] __do_sys_unlink fs/namei.c:4696 [inline] __se_sys_unlink fs/namei.c:4694 [inline] __x64_sys_unlink+0x3a/0x50 fs/namei.c:4694 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888057fa0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888057fa0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888057fa0a00: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888057fa0a80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff888057fa0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 48 21 c3 and %rax,%rbx 3: 0f 85 e9 01 00 00 jne 0x1f2 9: e8 65 2d 1f 00 call 0x1f2d73 e: 48 8b 5c 24 20 mov 0x20(%rsp),%rbx 13: 4d 85 f6 test %r14,%r14 16: 75 07 jne 0x1f 18: e8 56 2d 1f 00 call 0x1f2d73 1d: eb 06 jmp 0x25 1f: e8 4f 2d 1f 00 call 0x1f2d73 24: fb sti 25: 48 8b 44 24 28 mov 0x28(%rsp),%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 3a 41 83 00 call 0x834173 39: 48 8b 1b mov (%rbx),%rbx 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 44 rex.R 3f: 24 .byte 0x24 final repro crashed as (corrupted=false): ================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_write include/linux/instrumented.h:82 [inline] BUG: KASAN: slab-use-after-free in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] BUG: KASAN: slab-use-after-free in cpumask_clear_cpu include/linux/cpumask.h:628 [inline] BUG: KASAN: slab-use-after-free in flush_tlb_func+0x23d/0x6c0 arch/x86/mm/tlb.c:1132 Write of size 8 at addr ffff888057fa0a00 by task syz.3.4640/11173 CPU: 0 UID: 0 PID: 11173 Comm: syz.3.4640 Not tainted 6.16.0-rc4-next-20250630-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:189 instrument_atomic_write include/linux/instrumented.h:82 [inline] clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] cpumask_clear_cpu include/linux/cpumask.h:628 [inline] flush_tlb_func+0x23d/0x6c0 arch/x86/mm/tlb.c:1132 csd_do_func kernel/smp.c:134 [inline] __flush_smp_call_function_queue+0x370/0xaa0 kernel/smp.c:540 __sysvec_call_function_single+0xa8/0x3d0 arch/x86/kernel/smp.c:271 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline] sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:console_flush_all+0x7f7/0xc40 kernel/printk/printk.c:3227 Code: 48 21 c3 0f 85 e9 01 00 00 e8 65 2d 1f 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 56 2d 1f 00 eb 06 e8 4f 2d 1f 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 3a 41 83 00 48 8b 1b 48 8b 44 24 RSP: 0018:ffffc90004e67120 EFLAGS: 00000293 RAX: 1ffffffff1d36a63 RBX: ffffffff8e9b5318 RCX: ffff8880584eda00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004e67270 R08: ffffffff8fa17437 R09: 1ffffffff1f42e86 R10: dffffc0000000000 R11: fffffbfff1f42e87 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b52c0 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 random_pm_notification+0x1ba/0x1f0 drivers/char/random.c:856 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 notifier_call_chain_robust kernel/notifier.c:120 [inline] blocking_notifier_call_chain_robust+0x85/0x100 kernel/notifier.c:345 pm_notifier_call_chain_robust+0x2c/0x60 kernel/power/main.c:102 snapshot_open+0x133/0x280 kernel/power/user.c:87 misc_open+0x2bc/0x330 drivers/char/misc.c:161 chrdev_open+0x4cc/0x5e0 fs/char_dev.c:414 do_dentry_open+0xdf3/0x1970 fs/open.c:964 vfs_open+0x3b/0x340 fs/open.c:1094 do_open fs/namei.c:3887 [inline] path_openat+0x2ee5/0x3830 fs/namei.c:4046 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1434 do_sys_open fs/open.c:1449 [inline] __do_sys_openat fs/open.c:1465 [inline] __se_sys_openat fs/open.c:1460 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1460 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa75b98e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe8f347858 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa75bbb5fa0 RCX: 00007fa75b98e929 RDX: 000000000000803f RSI: 0000200000000600 RDI: ffffffffffffff9c RBP: 00007fa75ba10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa75bbb5fa0 R14: 00007fa75bbb5fa0 R15: 0000000000000004 Allocated by task 9122: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236 dup_mm kernel/fork.c:1466 [inline] copy_mm+0xdb/0x4b0 kernel/fork.c:1528 copy_process+0x1706/0x3c00 kernel/fork.c:2168 kernel_clone+0x21e/0x870 kernel/fork.c:2598 __do_sys_clone kernel/fork.c:2741 [inline] __se_sys_clone kernel/fork.c:2725 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 11172: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4782 exit_mm+0x1da/0x2c0 kernel/exit.c:581 do_exit+0x648/0x2300 kernel/exit.c:947 do_group_exit+0x21c/0x2d0 kernel/exit.c:1100 __do_sys_exit_group kernel/exit.c:1111 [inline] __se_sys_exit_group kernel/exit.c:1109 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1109 x64_sys_call+0x21ba/0x21c0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888057fa0000 which belongs to the cache mm_struct of size 2584 The buggy address is located 2560 bytes inside of freed 2584-byte region [ffff888057fa0000, ffff888057fa0a18) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x57fa0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88805c460c81 anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801a44bb40 0000000000000000 dead000000000001 raw: 0000000000000000 00000000800b000b 00000000f5000000 ffff88805c460c81 head: 00fff00000000040 ffff88801a44bb40 0000000000000000 dead000000000001 head: 0000000000000000 00000000800b000b 00000000f5000000 ffff88805c460c81 head: 00fff00000000003 ffffea00015fe801 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5988, tgid 5988 (syz-executor), ts 448409180536, free_ts 448403732949 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1848 prep_new_page mm/page_alloc.c:1856 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3855 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5145 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2487 [inline] allocate_slab+0x8a/0x370 mm/slub.c:2655 new_slab mm/slub.c:2709 [inline] ___slab_alloc+0xbeb/0x1410 mm/slub.c:3891 __slab_alloc mm/slub.c:3981 [inline] __slab_alloc_node mm/slub.c:4056 [inline] slab_alloc_node mm/slub.c:4217 [inline] kmem_cache_alloc_noprof+0x283/0x3c0 mm/slub.c:4236 dup_mm kernel/fork.c:1466 [inline] copy_mm+0xdb/0x4b0 kernel/fork.c:1528 copy_process+0x1706/0x3c00 kernel/fork.c:2168 kernel_clone+0x21e/0x870 kernel/fork.c:2598 __do_sys_clone kernel/fork.c:2741 [inline] __se_sys_clone kernel/fork.c:2725 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5988 tgid 5988 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1392 [inline] __free_frozen_pages+0xb80/0xd80 mm/page_alloc.c:2892 discard_slab mm/slub.c:2753 [inline] __put_partials+0x156/0x1a0 mm/slub.c:3218 put_cpu_partial+0x17c/0x250 mm/slub.c:3293 __slab_free+0x2d5/0x3c0 mm/slub.c:4550 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236 getname_flags+0xb8/0x540 fs/namei.c:146 getname include/linux/fs.h:2909 [inline] __do_sys_unlink fs/namei.c:4696 [inline] __se_sys_unlink fs/namei.c:4694 [inline] __x64_sys_unlink+0x3a/0x50 fs/namei.c:4694 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888057fa0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888057fa0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888057fa0a00: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888057fa0a80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff888057fa0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 48 21 c3 and %rax,%rbx 3: 0f 85 e9 01 00 00 jne 0x1f2 9: e8 65 2d 1f 00 call 0x1f2d73 e: 48 8b 5c 24 20 mov 0x20(%rsp),%rbx 13: 4d 85 f6 test %r14,%r14 16: 75 07 jne 0x1f 18: e8 56 2d 1f 00 call 0x1f2d73 1d: eb 06 jmp 0x25 1f: e8 4f 2d 1f 00 call 0x1f2d73 24: fb sti 25: 48 8b 44 24 28 mov 0x28(%rsp),%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 3a 41 83 00 call 0x834173 39: 48 8b 1b mov (%rbx),%rbx 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 44 rex.R 3f: 24 .byte 0x24